<template>
  <div class="cmt-container">
    <h3>发表评论</h3>
    <hr>
    <textarea placeholder="请输入要BB的内容（做多吐槽120字）" maxlength="120" v-model="msg"></textarea>

    <mt-button type="primary" size="large"  @click="postComment">发表评论</mt-button>

    <div class="cmt-list">
      <div class="cmt-item" v-for="(item, i) in comments" :key="i">
        <div
          class="cmt-title"
        >第{{ i+1 }}楼&nbsp;&nbsp;用户：{{ item.user_name }}&nbsp;&nbsp;发表时间：{{ item.add_time | format}}</div>
        <div class="cmt-body">{{ item.content === 'undefined' ? '此用户很懒，嘛都没说': item.content }}</div>
      </div>
    </div>

    <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
  </div>
</template>

<script>
import { Toast } from "mint-ui";
import { getcomments ,postcomment} from "@/api";
// import { log } from 'util';
export default {
  data() {
    return {
      msg: "",
      comments: [
        {
          /* user_name:'1',add_time:'2019-3-27',content:'123456' */
        }
      ],
      pageindex: 1,
      content:''
    };
  },
  mounted() {
    //vue中提供的方法
    this.init();
    // console.log({id:this.id,pageindex:this.pageindex},7);
  },
  methods: {
    init() {
      getcomments({ id: this.id, pageindex: this.pageindex }).then(res => {
        console.log(res, 999);
        if (res.data.status == 0) {
          //将之前的老数据和获取的新数据拼接起来
          this.comments = this.comments.concat(res.data.message); 
        } else {
          Toast("获取评论失败！");
        }
      });
    },
    getMore() {
      //加载更多
      this.pageindex++;
      /*   getcomments({id:this.id,pageindex:this.pageindex}).then(res=>{
            console.log(res,999);
            if(res.data.status ===0){
               this.comments=this.comments.concat(res.data.message); 
            }else{
                Toast("获取评论失败！"); */
      this.init();
    },
    postComment() {
      if(this.msg.trim().length==0){
        return Toast('评论内容为空');
      };
      postcomment({id:this.id,content:this.msg.trim()}).then(res=>{
        console.log(res,777);
        if(res.status==200){
          var cmt={user_name:'匿名用户',add_time:new Date(),content:this.msg};
          this.comments.unshift(cmt);
          this.msg=''
        }
      })
    },
  },
  created(){},
  props: ["id"]
};
</script>


<style lang="less" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }

  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        line-height: 30px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>
